In a recent visit to Greece, the secretary of state suggested that Europe must rediscover the values of conquest and expansion

They had obviously worked hard on the backdrop – and it was magnificent. On 7 October, the US secretary of state, Marco Rubio, delivered a major speech in Athens, outdoors, with the Acropolis behind him. The sun was setting, bathing the ancient scene, including the Parthenon, in the light of the golden hour.

The golden hour, but yet not quite the golden age. This was not Pericles defending democracy. Instead, Rubio offered a haunting vision of the choices facing the west, arguing that the US and Europe must rediscover the values of exploration and conquest that once drove centuries of expansion, or face decline and irrelevance.